Abstract: By comparing morphological characteristics of Armeniaca vulgaris Lam. and A. vulgaris var. ansu (Maxim.) Yu et Lϋ, A. vulgaris was found to have great variability and A. vulgaris var. ansu as identified in some herbaria was found to be a mixed group. Based on these observations, the circumscriptions of A.  vulgaris and A.  vulgaris var.  ansu are revised and a new  species,  A.zhidanensis C. Z. Qiao et Y. P. Zhu, is described.